Cyclists, listen up! If you're tired of getting that nasty mud stripe up your back or having water spray everywhere, these SYCOOVEN retractable mudguards are about to change your life. You get a complete set - both front and rear fenders that actually retract when you don't need them! The front expands to 33cm and the rear to 46cm, giving you solid coverage when it's messy out, but they fold down to compact sizes when you want a cleaner look. Made from durable plastic and rubber, they install easily on tubes from 17-28mm diameter. The best part? The rear mudguard comes with a built-in tail light (battery included!) so you're more visible in low light conditions. Installation is straightforward with the included wrench and kit. I've used these on both my mountain bike for trail riding and my road bike for commuting, and they make such a difference on wet days. No more arriving at work with a soaked back or dealing with mud in your face on the trails. They're sturdy enough to handle rough terrain but easy to tuck away when the sun's out. Seriously, if you ride in anything other than perfect weather, these are worth every penny. Your clothes and bike will stay so much cleaner!